There is one thing I cannot get to work: horizontal scrolling.
There are some outputs from my storage system that are very wide, lets say up to 300 columns or more.

When I leave SecureCRT at default settings, the lines are wraped at the screen edge and the output is almost unreadable.

When I change the Session Options / Terminal / Emulation / Modes / Line wrap to unchecked, the output is simply truncated at the right edge. This is also not what I want. I'd like to have a horizontal scrollbar and scroll through my output.

It happens a lot that the output of a command is so long it goes of the screen. When setting "line wrap" on, the output continues on the second line.

The reason I chose SecureCRT is because it has a horizontal scrollbar, but it's not doing anything. When disabling "line wrap", I expect the output to continue on the same line but having to use the horizontal scrollbar to scroll to the right to see everything that went of the screen. The same way you can scroll up to see back at what you've been doing on the terminal.

Instead when disabling "line wrap", the line is cut off at the edge of the window.

Screenshot:

The first is with line wrap on, the second off and then I moved the window border a bit to the right to show the problem. Without "line wrap", the line is cut off at the edge of the window, the rest of the output is just gone.

So what is that horizontal bar doing there anyway? Right now it looks like it's there for nothing.

Thanks for the question. To use the horizontal scroll bar, you will need to enable Retain size and font located in the On resize section of the Terminal / Emulation category of the Session Options dialog.

As a quick note, Line wrap mode just configures SecureCRT to either truncate the data or wrap it. It is possible to use the Line wrap mode in conjunction with the horizontal scroll bar. If the logical columns are not sufficient, it is possible that data will be truncated even when using the horizontal scroll bar if the Line wrap mode is disabled.

Here is a snippet from the help file:

Check this option to have any characters received when the cursor is at the right margin be displayed on the next line. The right margin is defined by the number of logical columns. If Line wrap is not selected, any characters received when the cursor is at the right margin will be displayed just to left of the right margin, replacing the current character displayed there. By default, Line wrap mode is selected.